Industrial waste heat recovery and cogeneration involving organic Rankine cycles

This paper proposes a systematic approach for energy integration involving waste heat recovery through an organic Rankine cycle (ORC). The proposed approach is based on a two-stage procedure. In the first stage, heating and cooling targets are determined through heat integration. This enables the identification of the excess process heat available for use in the ORC. The optimization of the operating conditions and design of the cogeneration system are carried out in the second stage using genetic algorithms. A modular sequential simulation approach is proposed including several correlations to determine the properties for the streams in the ORC. The proposed approach is applied to a case study which addresses the tradeoffs among the different forms of energy and associated costs. The results show that the optimal selection of the operating conditions and working fluid is very important to reduce the costs associated to the process.

[1]  Mahmoud M. El-Halwagi,et al.  Incorporation of process integration into life cycle analysis for the production of biofuels , 2011 .

[2]  M. McLinden,et al.  NIST Standard Reference Database 23: Reference Fluid Thermodynamic and Transport Properties-REFPROP, Version 8.0 , 2007 .

[3]  W. Worek,et al.  Optimum design criteria for an Organic Rankine cycle using low-temperature geothermal heat sources , 2007 .

[4]  Arturo Jiménez-Gutiérrez,et al.  Optimization model for re-circulating cooling water systems , 2010, Comput. Chem. Eng..

[5]  Mahmoud M. El-Halwagi,et al.  Sustainable Design Through Process Integration: Fundamentals and Applications to Industrial Pollution Prevention, Resource Conservation, and Profitability Enhancement , 2011 .

[6]  Mahmoud M. El-Halwagi,et al.  Optimal design and integration of solar systems and fossil fuels for sustainable and stable power outlet , 2009 .

[7]  Mahmoud M. El-Halwagi,et al.  Optimal integration of organic Rankine cycles with industrial processes , 2013 .

[8]  Klaus D. Timmerhaus,et al.  Plant design and economics for chemical engineers , 1958 .

[9]  Patrick Linke,et al.  An exergy composite curves approach for the design of optimum multi-pressure organic Rankine cycle processes , 2014 .

[10]  Berhane H. Gebreslassie,et al.  Design of environmentally conscious absorption cooling systems via multi-objective optimization and life cycle assessment , 2009 .

[11]  Robert E. Barber.  Current costs of solar powered organic Rankine cycle engines , 1978 .

[12]  José María Ponce-Ortega,et al.  Waste Heat Recovery through Organic Rankine Cycles in the Bioethanol Separation Process , 2014 .

[13]  Robin Smith,et al.  Chemical Process: Design and Integration , 2005 .

[14]  Daryl Ray Prigmore,et al.  Cooling with the sun's heat Design considerations and test data for a Rankine Cycle prototype , 1975 .

[15]  Mahmoud M. El-Halwagi,et al.  Integration of Solar Energy into Absorption Refrigerators and Industrial Processes , 2010 .

[16]  Santanu Bandyopadhyay,et al.  Process integration of organic Rankine cycle , 2009 .

[17]  Majid Saffar-Avval,et al.  Efficient design of feedwater heaters network in steam power plants using pinch technology and exergy analysis , 2008 .

[18]  Berhane H. Gebreslassie,et al.  Economic performance optimization of an absorption cooling system under uncertainty , 2009 .

[19]  Mahmoud M. El-Halwagi,et al.  Multiobjective design of interplant trigeneration systems , 2014 .

[20]  Berhane H. Gebreslassie,et al.  A systematic tool for the minimization of the life cycle impact of solar assisted absorption cooling systems , 2010 .

[21]  J. M. Ponce-Ortega,et al.  Integration of Renewable Energy with Industrial Absorption Refrigeration Systems: Systematic Design and Operation with Technical, Economic, and Environmental Objectives , 2011 .

[22]  Ignacio E. Grossmann,et al.  A Rigorous MINLP Model for the Optimal Synthesis and Operation of Utility Plants , 1998 .

[23]  Xiaoyun Qin,et al.  Switchgrass as an alternate feedstock for power generation: an integrated environmental, energy and economic life-cycle assessment , 2006 .

[24]  Mahmoud M. El-Halwagi,et al.  Sustainable Integration of Trigeneration Systems with Heat Exchanger Networks , 2014 .